Coffee Lovers Are Leaner and More Muscular: Scientists Analyzed Data from Over 2,200 People
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17.08.2026 23:37
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2 min read
Regular coffee consumption is statistically linked to lower body fat percentage and increased muscle mass. That’s the conclusion of researchers from the University of Oulu in Finland, who analyzed data from 2,264 participants aged 46.
The study participants were divided into four groups: those who don’t drink coffee, and those who consume 1–2 cups, 3–4 cups, or five or more cups per day.
Effects on Fat, Muscle, and BCAA Levels
According to the study published in the European Journal of Nutrition, despite nearly identical body mass index (BMI), people with higher coffee consumption had lower percentages of total and dangerous visceral fat, as well as greater skeletal muscle mass.
The authors found a link between coffee and lower concentrations of branched-chain amino acids (BCAAs) — leucine, isoleucine, and valine. Excess of these substances in the blood is traditionally associated with the development of insulin resistance and type 2 diabetes. The metabolic effect was most pronounced in men: each additional cup correlated with better insulin sensitivity and lower fasting glucose levels.
Hormonal Profile and Scientific Caveats
According to the Medical Xpress science portal, in men, coffee consumption was also associated with higher total and bioavailable testosterone, along with increased levels of the binding protein SHBG, although free testosterone levels were slightly lower.
The researchers emphasize that the study was observational and only proves a statistical correlation, not a direct effect of coffee on muscle growth or fat burning. Additionally, during data collection, the scientists did not account for coffee varieties, roast levels, or additives like sugar or milk.
